VCV000531846.1 - ClinVar

NC_000004.11:g.(?_90647315)_(90756838_?)dup

Germline

Classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

(1)

Stars represent the aggregate review status, or the level of review supporting the aggregate germline classification for this VCV record. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. The number of submissions which contribute to this review status is shown in parentheses.

Pathogenic

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NC_000004.11:g.(?_90647315)_(90756838_?)dup

Variation ID: 531846 Accession: VCV000531846.1

Type and length

Duplication, 109,524 bp

Location

Cytogenetic: 4q22.1 4: 89726164-89835687 (GRCh38) [ NCBI UCSC ] 4: 90647315-90756838 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Oct 10, 2018	Oct 10, 2018	May 12, 2018

HGVS

Nucleotide	Protein	Molecular consequence
NC_000004.11:g.(?_90647315)_(90756838_?)dup

Protein change

Other names

Canonical SPDI

Functional consequence Help The effect of the variant on RNA or protein function, based on experimental evidence from submitters.

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

Links

VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
SNCA		-	-	GRCh38 GRCh37	167	207

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Autosomal dominant Parkinson disease 1 Lewy body dementia	Pathogenic (1)	criteria provided, single submitter	May 12, 2018	RCV000638390.4

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	More information Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Pathogenic (May 12, 2018)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	Lewy body dementia Parkinson disease 1 Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV000759898.2 First in ClinVar: May 28, 2018 Last updated: Oct 10, 2018	Publications: PubMed (10) PubMed: 28492532‚ 25003242‚ 18413475‚ 15451224‚ 15451225‚ 19833540‚ 23880019‚ 18852445‚ 24552873‚ 19139307 Comment: This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the SNCA gene. The boundaries of this … (more) This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the SNCA gene. The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. As the precise location of this event is unknown, it may be in tandem or it may be located elsewhere in the genome. Similar whole gene copy number gains of SNCA been reportedÂ¬â€ in many individuals affected with Parkinson's disease, some of whom had psychiatric symptoms (PMID: 25003242, 19833540, 23880019, 24552873, 15451225). This variant has also been reported to segregate with autosomal dominant Parkinson's disease in multiple affected families (PMID: 18413475, 15451224, 19139307, 23880019, 18852445). For these reasons, this variant has been classified as Pathogenic. (less)

Comment:

This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the SNCA gene. The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. As the precise location of this event is unknown, it may be in tandem or it may be located elsewhere in the genome. Similar whole gene copy number gains of SNCA been reportedÂ¬â€ in many individuals affected with Parkinson's disease, some of whom had psychiatric symptoms (PMID: 25003242, 19833540, 23880019, 24552873, 15451225). This variant has also been reported to segregate with autosomal dominant Parkinson's disease in multiple affected families (PMID: 18413475, 15451224, 19139307, 23880019, 18852445). For these reasons, this variant has been classified as Pathogenic.

Germline Functional Evidence

There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar.

Comment:

Citations for germline classification of this variant

Title	Author	Journal	Year	Link
A 6.4 Mb duplication of the α-synuclein locus causing frontotemporal dementia and Parkinsonism: phenotype-genotype correlations.	Kara E	JAMA neurology	2014	PMID: 25003242
Mosaicism of alpha-synuclein gene rearrangements: report of two unrelated cases of early-onset parkinsonism.	Perandones C	Parkinsonism & related disorders	2014	PMID: 24552873
Detection of copy number changes in genes associated with Parkinson's disease in Iranian patients.	Darvish H	Neuroscience letters	2013	PMID: 23880019
alpha-Synuclein multiplication analysis in Italian familial Parkinson disease.	Sironi F	Parkinsonism & related disorders	2010	PMID: 19833540
Alpha-synuclein gene rearrangements in dominantly inherited parkinsonism: frequency, phenotype, and mechanisms.	Ibáñez P	Archives of neurology	2009	PMID: 19139307
Prominent psychiatric symptoms and glucose hypometabolism in a family with a SNCA duplication.	Uchiyama T	Neurology	2008	PMID: 18852445
Patients homozygous and heterozygous for SNCA duplication in a family with parkinsonism and dementia.	Ikeuchi T	Archives of neurology	2008	PMID: 18413475
Causal relation between alpha-synuclein gene duplication and familial Parkinson's disease.	Ibáñez P	Lancet (London, England)	2004	PMID: 15451225
Alpha-synuclein locus duplication as a cause of familial Parkinson's disease.	Chartier-Harlin MC	Lancet (London, England)	2004	PMID: 15451224

Text-mined citations for this variant ...

Record last updated Sep 29, 2024

ClinVar Genomic variation as it relates to human health

NC_000004.11:g.(?_90647315)_(90756838_?)dup

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...